Composition of certain financial statement captions - Schedule of allowance for doubtful accounts (Details) $ in Thousands |
12 Months Ended |
|---|---|
|
Jan. 31, 2021
USD ($)
| |
| Accounts Receivable, Allowance for Credit Loss [Roll Forward] | |
| Allowance for doubtful accounts at beginning of period | $ 943 |
| Bad debt expense | 454 |
| Write-offs and adjustments | (698) |
| Allowance for doubtful accounts at end of period | $ 699 |
| X | ||||||||||
- Definition Amount of allowance for credit loss on accounts receivable, classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
|
| X | ||||||||||
- Definition Amount of direct write-downs of accounts receivable charged against the allowance. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of expense (reversal of expense) for expected credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|